CVE-2017-7817

MEDIUM

Firefox < 56 - Spoofing via Fullscreen Mode Address Bar

Title source: llm

Description

A spoofing vulnerability can occur when a page switches to fullscreen mode without user notification, allowing a fake address bar to be displayed. This allows an attacker to spoof which page is actually loaded and in use. Note: This attack only affects Firefox for Android. Other operating systems are not affected. This vulnerability affects Firefox < 56.

References (4)

Core 4

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1039465

Vendor Advisory x_refsource_confirm

https://www.mozilla.org/security/advisories/mfsa2017-21/

Exploit, Issue Tracking x_refsource_confirm

https://bugzilla.mozilla.org/show_bug.cgi?id=1356596

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/101057

Scores

CVSS v3 5.3

EPSS 0.0088

EPSS Percentile 75.6%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

CWE

CWE-20

Status published

Products (1)

mozilla/firefox < 55.0.3

Published Jun 11, 2018

Tracked Since Feb 18, 2026